25 Pieces Clip-on Ferrite Ring Cores - DGQ RFI EMI Noise Suppressor Cable Clip for 3.5mm/ 5mm/ 7mm/ 9mm/ 13mm Diameter Led Light Radio Static

In the course of its operation, the blower motor was performing During testing, the wiring harness within the furnace (think of an antenna) emitted a steady high-pitched signal The strongest pitch whine is at It's not a good idea to shut down the furnace in Northwest Wisconsin in winter. Here are a couple of choices I thought I would try out. Based on reading some reviews, some claimed that frequencies over 20 MHz would not be filtered out? They were wrong when they wrote those reviews- I have found this to be the case, at least in my case. I installed quite a few (I think 7-- There are eight) different RFI SNAP chokes located all along the wiring harness of the actual HVAC blower motor harness. You need to snap the beads tightly because the longer the wire, the more attenuation (choking) the beads will do. There are two sizes of Ferrite beads that I used large and medium. It is extremely vital that you slow down the interference signals as they propagate along the wires, then bend them by using the magnetic beads to break them up. Sometimes I would wrap these beads every 5 to 6 inches to make sure that any RFI is absorbed. In addition, wrapping the MAIN BLOWER FeeD WIRES and shielding them with aluminum foil and 2 layers of 3M electrical tape may have also contributed to the resolution levels. The foil and taping came off okay, but not as well as we had hoped. End results are that 90% of most RF interference is zeroed out within the furnace and there is little or no emitted frequency showing up at my radio location. Please do not forget about the longest HVAC wires in the system. Your feed wires to the thermostat are vital and should be used. In addition to these, there are two more. I think this is awesome stuff, try it out for $10 if you have any interference issues on the HF band around 26. Good luck out there, and if it helps even one person, thanks. A 5 to 28 scale. It was worth reading to know about 5 MHZ , then, you could say Racing Ricky 1973's.

Jared HOPE

| Jan 17, 2021

Be sure to add one (or a few) when you connect your antenna lead to the coax coming into the back of the rig to prevent common mode currents from traveling through it. If you're looking for a ferrite material with low or high bands, be sure that it performs well on them. Check online for what you're looking for before you start buying It is true that not all ferrite cores are created equal!.

Caiden Hamilton

| Mar 15, 2021

It's important to me to keep a good selection of these things available when I am an amateur radio operator. prevent stray radiation from entering the transmission line when it is unbalanced in the HF band. Power cords and computer cables are also part of their job description. RF noise from some appliances can be muted with these, but it has been limited success so far. My house now has one of these on the cord of every device hooked up to the wall power outlet. I have also successfully used six or eight of these in a row to quiet down stray RF and to prevent a coax feed line from affecting the The assortments and sizes of these items are many.

Ariella CARTWRIGHT

| Feb 23, 2021

The Barron's 4ft LED shop lights I put in my garage are being affected by fm radio interference, so I purchased these to reduce the interference. Despite the fact that it doesn't help, it still happens. When the light is turned off, the interference is gone. There is a lot of interference when they are on. My interference problem is still unsolved by these ferrite ring cores, even though the light is nice and bright. The best we can say is that we are disappointed.

Christopher Hart

| Feb 05, 2021

DON'T BUY this useless product as it does nothing to block or reduce the effects of interference being generated by LED headlights or fog lights.

Jaxen Gibbs

| Feb 11, 2021

When I replaced my headlights with LEDs more than a year ago, the truck radio showed a lot of static. These little gems cleared it all up. A noise reducing transformer was added to each B+ line and the static noise was eliminated completely. My LED tail lights will soon be added, so I got the whole kit so I can install it when the time comes.

Martha Clayton

| May 15, 2021

I found them to be very useful for my purposes. It was a perfect idea to provide different sizes for the buttons. In fact, I used them as kind of "weights" for some USB Type-C cables I wanted an easy way to retract the cords that hang behind my desk, and those cable organizers worked well.

Belle MIAH

| Jul 23, 2020

My G5RV antenna feedline point has reduced stray Rf effectively through the use of these. I have seen them work.

Kara Klein

| Aug 05, 2020